Power-hammer



' (No Modei.) s Sheets-Sheet. 1.

J, CANNING. POWER HAMMER.

No. 484,775. Patented Oct. 25, 1892.

WITNESSES: INVENTOR %g I- B I All /I 4 I ATTORNEY.

(No Model.) I 3 Sheets-Sheet 2.

J. GANNING. POWER HAMMER.

Patented 001;. 25, 1892.

XVENTOR B w ATTORNEY.

(No Model.) I 3 Sheets-Sheet J.- GANNING.

POWER HAMMER.

No. 484,775. Patented Oct. 25, 1892.

ATmNEY.

'UNITED STATES PATENT OFFICE.

JAMES CANNING, OF MONTPELIER, VERMONT.

POWER-HAMM ER.

SPECIFICATION forming part of LettersPatent No. 484,775, dated October 25, 1892.

Application filed October 13, 1891. Serial No. 408,598. (No model.)

To all whom it may concern.-

Be it known that I, JAMES CANNING, a citizen of the United States, residing at Montpelier, in the county of Washington and State of Vermont, have invented certain new and useful Improvements in Power-Hammers; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My present invention relates to an improvement in power-hammers, the object of the invention being to simplify and perfect the construction of power devices of this character; and the invention therefore consists in the construction, arrangement, and combination of parts, substantially as will be hereinafter described and claimed.

In the annexed drawings, illustrating my invention, Figure l is a front end elevation of my improved power-hammer. Fig. 2 is a side elevation of the same. Fig. 3 is a rear end elevation. Fig. 4 is a sectional detail view of the crank-disk and the parts for movably connecting the upper ends of the springs thereto.

Similar letters of reference designate corresponding parts throughout the different figures.

A designates the main frame or column of my improved power-hammer mechanism, said frame being susceptible of a considerable variation in its structure, so that it may readily accommodate and suit itself to the numerous mechanical parts which are arranged in connection therewith. This column or frame A will of course be of suitable size, shape, and strength and mounted upon a firm and rigid bed, so that it may be stationary and immovable.

0 denotes a vertically sliding frame arranged in the upper portion of the main column A and adapted to be moved up and down and thus adjusted at different points. The frame 0 is suitably provided with slides that work in corresponding ways in the column A.

In the upper portion of the vertically-adjustable frame 0 a horizontal shaft B is journaled in suitable supports or bearings. This shaft 13 carries at one end the crank-disk B, rigidly secured thereon, and at its other end it carries a friction-wheel L, preferably a paper friction. The disk B is provided with the crank-pin X, the inner end of which is preferably headed, as shown in Fig. 2, so that it may be inserted within a T-shaped slot Y in the disk B. The crank-pin X is clamped in place by means of the nut X thereon. A casting 0 is supported on pin X and held between disk B and a nut on the outer end of said pin. Thus it will be observed that the disk B is provided with a slot which receives the inner headed end of' the crank-pin and permits the said pin to be adjusted so as to occupy points at different distances from the center of the disk, thereby enabling the operator to control and regulate the extent of motion of certain of the connected parts.

In connection with the vertically-adjustable frame 0 is arranged a yoke-frame I, which is supported by frame 0 and is itself adjustable to a greater or less degree relatively to the frame 0. In the yoke I is journaled a horizontal shaft J which carries a drive-pulley J, to which is applied a belt leading from any suitable actuating power, and said shaft J 2 also carries a friction-wheel K, arranged in line with the friction-pinion B said wheel K being preferably an iron friction-wheel and being adjustable toward and from the pinion 13 so that it may be either in contact with or out of contact with said pinion,the adjustment of the wheel K being accomplished by the movement of yoke I. When the wheelK is in contact. with friction-pinion B motion will be communicated from the source of power to the crank-disk B and to the other mechanism whereby the hammer is operated. When the wheel K is out of contact with the pinion B then the operating parts of the hammer lie idle.

The vertically-adjustable frame 0 is adjusted by means of a vertically-lifting screw P, which engages a suitable nut on the frame 0 and is supported in the main column A, said screw P being provided near its lower end with the Worm-gear S, which engages a wormshaft R, that is supported horizontally in suitable bearings in the frame A and is provided at its outer end with a hand-wheel Q, by the rotation of which the screw P may be rotated in one direction or the other, as the case may require, and thus the sliding frame and the mechanism supported thereon be lifted or lowered, as desired.

By referring to Fig. 2 it will be seen that the sliding frame 0 is provided with a scale a and that on the column A, adjacent to the scale a, is a pointer 12, whose end is contiguous to the marks on the scale. The scale and pointer enable the operator to measure the amount of adjustment of the frame 0.

F designates the hammer, and W the hammer-guides, wherein the hammer is permitted to have a vertical travel. Beneath the hammer is arranged a suitable bed upon which it may strike or whereon the work upon which it is to operate can be located. l heupper end of the hammer is provided with a transverse pin or journalsupported therein ateach endand carrying a hammer-connectioncasting D. The castings O and D are similar in form and f unction,said castingO being loosely supported upon the crank-pin X, while the casting D, as we have just seen, is loosely.

mounted upon the hammer-pin d. The casting 0 is provided with oppositely-projecting lugsc c and the casting D is provided with similar oppositely-projecting lugs d d.

casting D.

Many advantages accrue from the use of springs in this way, and I deem this an essential and important feature of my invention. It will be at once seen that this construction is simple, easy, and efficient. I reserve the liberty of varying the form and exact construction-and arrangement of these springs,

desiring to cover as broadly as possible the novel feature of introducing aspring connection between the actuating-disk-and thehammer of a power-hammer mechanism.

To the lower portion or base of main column A is pivotally supported a treadle G in such convenient position that it maybe readily operated by the foot of the operator. This treadle, as is shown in Fig. 2, ispivoted to the lower end of a vertical rod, which I term the cam and brake rod. This rod is divided at a point near its lower end, its lower portion being formed with a socket or clamp U, that receives the lower end of the upper portion, said socket or clamp being provided with a clamping-screw, which may be tightened to connect the two parts of the cam and brake rod or maybe loosened for the purpose of :disconnecting the said parts. The upper endof the rod N ispivoted to the horizontal lever T, which carries at its outer end a balanceweight T and which is made rigid at its inner end with 'a rock-shaft T supported in suitable bearings in the vertically-adjustable frame 0 and provided with a rigid curved brake-shoe M, which lies contiguous to the periphery of the crank disk B and is designed to act as a brake upon said disk. Furthermore, it will be observed that the cam and brake rod N is provided with a lever V, pivoted thereto at a point about midway of its length. This lever I term the cam-lever. Its inner end is pivotally supported upon a stud projecting horizontally from the frame 0, on which stud is also arotary cam H, which is connected to the cam-lever V, being adj ustable in connection therewith by means of a set-screw, as shown in Figs. 2 and 3, this adjustment being for the purpose of taking up the wear in the friction, and the function of the cam H being to rotate at the proper time beneath the yoke-frame I, and thus lift the same sufliciently to place the periphery of the wheel K in contact with that of the pinion B or to place these two wheels out of contact. It will be evident that the oscillation of the cam-lever V, which takes place when the rod N moves upland down, will partially rotate the cam H sufficiently to accomplish the object indicated. By operating the treadle G, therefore, the cam II and the brake-shoe M i may both be actuated.

E Edesignate curved springs of suitable strength and elasticity for the purpose for which they are designed. These springs are pivoted at their upper ends to the lugs c c on the casting O, and at their lower ends they are similarly pivoted to the lugs d d on the Thusit will be'seen that the disk B has ayielding connection with the hammer.

erating the worm, worm-gear, and raising" screw, the sliding frame maybe lifted the desired distance. When thisframe is raised or lowered, it will be perceived that it carries bodily with it all the top part of the machine-- that is to say, everything is raised or lowered except the main column, the hammer-guides, the treadle, the lower part of the cam and brake rod, and thehand-Wheel, worm, wormgear, and raising-screw. By observing the pointer, which marks its indications upon the scale, the operator is able to easily locate the exact position which he desires for the sliding frame 0, and consequently the exact position of the hammer,-and when the hammer has been lifted to the desired point the clamp at the lower end of the cam and brake red may be tightened, thereby connecting thetwo parts of said rod. This adjustment of the hammer can be made at any time without stopping the machine, and when a piece of iron is to be drawn out which requires difierentadj ustments of the hammer'the operators helper may make theadjustment without the necessity of there being any delay in the work. This isan important .point in the facility of operation of my improved hammer.

friction-wheels in contact, thereby enabling power to be transmitted from the source of power to the hammer-driving devices, and brake-shoe M, which bears upon the periphery of the crank-disk B, is held under easy control by the operator by simply working the treadle G.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a power-hammer, the combination of the hammer and its operating mechanism, including a disk, an adjustable crank-pin on said disk, a casting loosely mounted on said pin, another casting loosely mounted at the upper end of the hammer, and curved springs pivotally connected at each end to the aforesaid castings, substantially as described.

2. In a power-hammer, the combination of the hammer and its operating mechanism, including a disk B, the crank-pin X, adjustably connected to the disk B, the casting 0, having lugs and mounted on pin X, the casting D, likewise havinglugs and pivotally supported in the upper end of the hammer, and the springs E, pivoted to the lugs on the casting 0 and those on the casting D, substantially as described.

3. In a power-hammer, the combination of the main column, the uppersliding frame carrying a shaft having a friction-wheel and a crank-disk, means for adjusting said frame, a connection between the crank-disk and the hammer, and the main drive-shaft carrying the friction-wheel adapted to be in or out of contact with the'aforesaid friction-wheel, and means for moving the friction-wheel into or out of contact with the friction-disk, substantially as described.

4. In a power-hammer, the combination of the hammer, the main column, the upper slidnection between the crank-disk and the hammer, the yoke supported by the sliding frame and adjustable relatively thereto, the yoke carrying the main driving-shaft having thereon the friction-wheel arranged to come in contact with the friction-wheel aforesaid, and means for adjusting the yoke, substantially as described.

6. In a power-hammer, the combination of the main column, the upper sliding frame carrying a shaft having thereon a friction-wheel and a crank-disk, means for lifting and lowering said sliding frame, a yoke adjustable on the sliding frame, said yoke carrying a driving-shaft having a friction-wheel thereon, a hammer connected to the crank-disk, a cam arranged below the adjustable yoke, a brakerod connected to the cam and the brake, and the brake-shoe arranged to bear on the crankdisk, substantially as described.

7. The combination of the main column, the Vertically-adj ustable frame having a horizon tal shaft carrying a friction-wheel and a crankdisk, means for adjusting said frame, a hammer, connections between the hammer and crank-disk, an adjustable yoke, a cam beneath the latter for adjusting it, said cam being connected to a cam-lever, a brake-shoe arranged to operate against the periphery of the crankdisk, said shoe being rigid on a crank-shaft, and the cam and brake rod pivotally connected to the brake shoe shaft and the cam-lever, substantially as described.

8. The combination of the main column, the vertically-adjustable frame, its lifting-screw, worm mechanism, and hand-wheel, the hori zontal shaft carried by said frame and having a friction-pinion and a crank-disk, an adjustable yoke on the sliding frame carrying the main driving-shaft having thereon a pulley and a friction-wheel, the hammer, and the springs E E, pivotally connecting the hammer with the crank disk, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

JAMES CANNING. Witnesses:

MELVILLE E. SMILIE, OLAREN on H. PITKIN. 

